Following on from my previous post regarding AFP and iSCSI benchmarks i’ve decided (after many requests) to post a few raw benchmarks of the system gathered by bonnie++, the environment is as follows:
CPU: Athlon 64 3700+
RAM: 2gb DDR400
Controllers: 2x SATA-II and 1x SATA-I
Hard Drives: 7x Samsung 2tb Spinpoint F3 5600 RPM
OS: NexentaStor 3
ZFS Config: Standard raidz1 with dedup=off and compression=off
So I gathered a few results… after some annoying results I found a bottleneck in my system on 1 of the drives that seemed to bring the benchmark result down greatly, however once this was worked out I acheived the following: …
Hi everyone! I keep getting lots of emails from people asking where they can buy xyz to complete the tutorials and try out some of the things listed on CaptainGeek, well after I kept emailing people the same links i had a thought, why not setup an amazon affiliate store. Basically, i’ve setup a small amazon site with a small selection of products (only those used for the tutorials on this site + related ones), purchases and payments are handled by amazon, however a small percentage of the sale goes to helping fund the server this website is hosted on AT NO EXTRA COST TO YOU 🙂 so its a win win situation, please use the links whenever you can.
Have you seen the Drobo box? it’s a SAN that allows you to create giant volumes and hot swap out hard drives at will with failure tolerance… bad news, is that it costs close to £1000 even without the drives, i’ll explain how to make a better one… for free! =).
ZFS (Zettabyte Filing System) is Sun’s newest file-system offering, its supported on FreeBSD / Solaris natively and Mac OS X / Linux / Windows via third-party utilities. I’m gonna keep this guide, simple, short and sweet, so i’ll bullet list the main features that wow people about ZFS =)
- It can store up to 340 quadrillion zettabytes of data (no other production filing system can do this)
- It checksum’s your data on the fly so you can check for integrity by “scrubbing” it (identifying broken drives before they completely die)
- It supports every raid configuration you can think of natively and doesn’t suffer from the raid5 data-hole.
- You can create snapshots of your data that do not waste hdd capacity.
- Volumes or “Pools” can be expanded at any time, so you can start with a 2tb raid, and increase it to a 10tb raid with no data loss.
- You can mix/match capacities, brands, rpm’s of drives.
- Its reliable* (on officially supported incarnations anyway)
- Its a memory whore (don’t try it unless you have 2gb ram on your system)
- Its supported in the latest version of FreeNAS (0.7)
- Allows hotplugging of drives when one fails (so you don’t lose data/time)
- Hotspares are supported
- Can be easily transferred / transported to any other ZFS supported system without extensive configuration or any data loss.
- Its free free free free (under CDDL).
Think of a hardware raid5 or a geom_concat/raid and then think about those again, but without any of the issues / flaws they have… thats what ZFS is! =)
So lets get started, I’ll run through creating and bringing a ZFS raid online first, and then some maintenance commands afterwards. I suggest trying this on a …